Code Examples

Hello, World!

ATT Bell Labs

Invented to re-write Unix
Replacement for assembler language
Low-level

Minicomputer
Small language; Small compiler

Popular for early PC's.

C++: 1980's

C was very popular.
Object-oriented programming becoming state-of-the-art.
ATT wanted to extend C to keep it up-to-date.

Originally: C + classes
Now: C + everything but the kitchen sink

Java: 1990's

Cleaned-up C++

C++ Has:

All of C.
A few incompatibilities.

General improvements.
Better I/O
Decent strings
Etc.

Classes and objects.

Templates.

Glued Together
Most C programs are C++ programs
But not all

In C++:

Two separate standard I/O systems.

Two separate systems for dynamic memory allocation.

Two different systems for string handling.

Hello, World!